{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["geographical phenomenon", "astronomical object", "media", "plant", "time", "location"], "input": "Commercially viable natural deposits of graphite occur in many parts of the world , but the most important sources economically are in China , India , Brazil and North Korea ."}
{"geographical phenomenon": [], "astronomical object": [], "media": [], "plant": [], "time": [], "location": ["China", "India", "Brazil", "North Korea"]}